Uncategorized
Inventor
Colour-television transmission systems
Device for producing an output signal proportional to the...
Frequency-division circuit-arrangement
Multiplex transmission system for the transmission of three...
No associations
LandOfFree
W. de Vrijer Frederik does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with W. de Vrijer Frederik, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and W. de Vrijer Frederik will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-620339